Meter.



No. 834,787. I PATENTED OCT. 30, 1906. J. WILLS & L. B IMLAY.

METER.

APPLIGATION FILED JUNE 21, 1904.

Wax/Mm PATENT OFFICE.

UNITED srArps JOSEPH WILLS AND LORIN E. IMLAY, OF NIAGARA FALLS, NEW YORK,

ASSIGNORS OF. ONE-THIRD TO THE NIAGARA FALLS POWER COM- PANY, OF NIAGARA FALLS, NEW YORK, A CORPORATION NEW YORK.

METER.

Specification of Letters Patent.

Patented Oct. 30, 1906.

Application filed June 21,1904. Serial No. 213,498.

To all whom it may concern.- Fi-Be it known that we, JOSEPH WILLS and Lonm E. IMLAY, citizens of the United States,

residing at Niagara Falls, in the county of 1 The object of our invention is to provide an improved self-recording device which will produce a permanent chronological record of the watt value of the electric current which is to be measured. To this end we employ the novel combination of mechanism hereinafter described, and shown in the drawings, in which like characters of reference indicate corresponding parts. Figure 1 is a side elevation of our improved wattmeter. Fig. 2 is a plan view thereof. Fig. 3 is a detail elevation of the magnet ac.- tuating the striker.

1 and 2 are the shunt-coils, and 3 the series coils carrying the coarse windings. 4 is the mutilated or cut away oscillating secondary disk providing twolwings and mounted in jewel-bearings between the shunt-coils and the series coils.

It will thus be seen that we employ first for a wattmeter of the type shown adapted to a two or'three phase current two single-phase induction-type .wattmeters -'arranged side by side and acting upon the two wings of the secondary disk 4.

The secondary disk 4 is cut away upon the portion outside the fields of influence and is so cut away as to lighten the load on the jewel-bearings and also to counterbalance the weight of the pointer 5. The pointer 5 is somewhat flexible in vertical plane and is se-- cured to the pivot of-the secondary disk. An adjustable involute spring 6 governs the po sition of the secondary disk and tends to swing the pointer 5 to the zero-point.

The recording apparatus consists of a roll of paper 7, which has longitudinal rulings a b c, &c., which are spaced to the calibration of the meter. We preferably place the line a at the zero-point and arrange the lines I) c d, &c., to designate fifty watts to the line; but this depends on the range to be covered. The paper 7 is wound on an outer roller 8, which is provided with abrake consisting of the spring 9 and the disk 10, hearing on the outer roller 8, so that considerable tension is required-to cause the paper to unroll. The paper is passed under the inner roller 11, is brought up overit, and back over the intermediate roller 12. The direction of winding of the paper about these rollers is indicated in broken line in Fig. 1. The inner roller 11 is provided with radial spurs or pin-points (not shown) to cause. it to engage the paper? and give it positive movement. The shaft of the inner roller 11 connects with clockwork 18, which determines and limits its speed.

Since the paper passes over the inner roller 11 and is not wound upon it, it will move with even speed. synchronously with the clock-movement. Hence we may employ transverse rulings (not shown) to space off desired intervals of time, so that the record showsboth' volume and time of power. The. intermediate roller 12 is rotated by strong springs 14 and connecting-gearing in the same directionof rotation as the mner roller 11. The function of the springs 14 is to wind up the paper 7 onto the intermediate roller 12 after it has been released from inner roller 11, whose speed is determined by the clock. All the power for driving the paper and the rollers is furnished by the springs 14.

I 15 is a magnet having a pivoted armature 16. The armature 16 is mounted on one 'magnet-core by a pivot-rod 17- and is normally in the position shown in Fig. 3. A weightedarm 18, mounted on the rod 17, serves to throw the armature 16 away from the other magnet-core. A circuit including the magnets 15 with'a source of energy (the circuit and battery not being shown) is closed by a contact-piece 19, dippmg in a mercurycup 20. The contact-piece 19 is actuated by a crank or cam 21 in rotation with a relatively rapidly rotating arbor of the clock- ,work, (preferably the arbor making a rotation every minute.) This crank striking the contact-piece 19, which is spring-held out of contact, causes it to dip in the mercury-cup to close the circuit including the magnets 15.

' with consider This causes the armature 16 to swing on its core, so as to contact with the other magnet core, and as soon as the circuit is broken the Weighted arm 18 will swing the armature 16 to normal.

Secured to the pivot-rod 17 is on L-shoped arm 22, and loosely pivoted on said rod 17 is a. striker 23. I nesth one of the lateral portions of the striker 23 and holds said striker 23 up when the armature 16 is in normal position. When the magnets 15 are energized, the pivot 17 is rotsted in s direction. to swing thearm 22 out of contact With the strike 23 and allow it to fell by gravity. The transverse portion of the striker 23 is ercof e. circle concen trio with the pivot of the pointer 5 and is positioned to strike the upper side of the pointer 5 near its extremity. The pointer 5 terminates in sstyhis or impression-point.

Underneath the psper 7 and hetween'the roliers '11 and 12 is an anvil or platen 24. Gerried in s guide-heme directly over this anvil and on top of the paper 7 is a printing ribbon or cerhon'25.

Y Vith this description of the 'psrts the operation may be briefly indiceted. l he interaction of-the series and shunt coils upon the secondary disk Will swine;

correspond to the current. corned. pointer is perfectly free to respond to the influences on the secondary disk, to Whi l1 it is ctteohcd, and does not make contact With the paper or record 'ept hereineit scribed. The clockwork Wiil cause or ne"mit theps )or or record to advance at e ixed speed. Periodicoily the crsnl: w'iii close e cui't of the magnets through c and meicurvcup, the ermcture 1 withdrew the from s strii: r 23. Tl, s' r 23 upon and cause its point or st flus to in impact upon the ribbon or ccrlx Will produce an. impre o the done in. the ordinary Since the "htesi arm 1 .ii: i

The arm 22 engages underthe pointer 5 to g This mechanism, e. forward as released, by seid cnronometor not, 9. s

the shunt-coils and the series coils, an indicctor mounted. in rotation with the secondary disk and counterbalanced by the outer side of the-disk, means for carrying and impsrting regular movement to a record-blank, and means adapted to strike the indicator for making impressions upon the record-blank at regular interveis of time and points corres onding to the position of said indicator at the moment of impact.

2. The combination of a. secondary disk having opposite Wings and an indicator, series coils end shunt-coilsbetween which the secondary disk is located arranged to act pen the opposite Wings cf said disk. moons for resisting the rotation oi said disk, means for carrying a record-blank, chrononioter spring for drawing said blank mechanism, and means adopted =to-s she the indicator for imprinting ecord of current measured by the Wettmeter on said bienk.

3. The combinstion of a 1 s shunt-'coii, an oscillatin lees-ted between the primary coil, on indicator, mounted. i said secondary disk, a printing indicator, chrenomet leting the movement oi-e re. rd-hlo forriisk" or mechanism s. sin. .c. no nsny held out of contact said idicctor, rfn o-rms'turc ectueting stril er, s. i 0 1st s-ctustii g soid armature end. means for ciosing the circuit or msgnet throu h the moveriicntci said olirenom- IOO spring mechanism for moving a record-blank forward, said indicator'swingmg transversely over the plane of the blank, means for producingvisible marks on said blank by said indicator, and means for producing said marks at regular intervals longitudinally of said blank and at oints transversely of said blank to indicate the volumeof energy measured at the instant of impact.

7. A Wattmeter comprising shunt-coils, series coils, a secondary disk having wings located between the shunt-coils and the series coils, the flexible ointer carried on the axis ofthe secondary k, the inner, intermediate, and outer rollers for the recordblank, clockwork whereby the inner roller is controlled, the springs whereby the inter mediate roller is rotated, the magnets having cores, thearmature, the pivot-rod whereby the armature is mounted on one ma et-core and adapted to contact with the ot er magnet-core, a weighted arm whereby the armature is retracted, a mercury-cup, a spring 7 contact-piece, a crank adapted to actuate the spring "contactiece to dip the latter in the cup, a-striker ocated over the flexible pointer, and an arm fixed to the pivot-rod and adapted to hold up the striker.

In testimony whereof .we have hereunto set our hands in the presence of two wit- T. A. PAN'inn, W. Lownv MANN,

' IIGSSGS. 

